--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/event/oldobject/TestAllocationTime.java	2019-01-29 11:04:03.389859917 +0800
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jfr.event.oldobject;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import jdk.jfr.Event;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedClass;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.jfr.consumer.RecordedObject;
+import jdk.jfr.internal.test.WhiteBox;
+import jdk.testlibrary.jfr.EventNames;
+import jdk.testlibrary.jfr.Events;
+import jdk.testlibrary.jfr.OldObjects;
+
+/*
+ * @test
+ * @key jfr
+ * @requires vm.gc == "null"
+ * @library /lib/testlibrary
+ * @modules jdk.jfr/jdk.jfr.internal.test
+ * @run main/othervm  -XX:TLABSize=2k -XX:-FastTLABRefill jdk.jfr.event.oldobject.TestAllocationTime
+ */
+public class TestAllocationTime {
+
+    private static class BeforeLeakEvent extends Event {
+    }
+    private static class AfterLeakEvent extends Event {
+    }
+    private static class Leak {
+    }
+
+    public static List<Leak[]> leak = new ArrayList<>(OldObjects.MIN_SIZE);
+
+    public static void main(String[] args) throws Exception {
+        WhiteBox.setWriteAllObjectSamples(true);
+
+        while(true) {
+            try (Recording recording = new Recording()) {
+                leak.clear();
+                recording.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "1 h");
+                recording.start();
+
+                BeforeLeakEvent be = new BeforeLeakEvent();
+                be.commit();
+
+                // Allocate array to trigger sampling code path for interpreter / c1
+                for (int i = 0; i < OldObjects.MIN_SIZE; i++) {
+                    leak.add(new Leak[0]);
+                }
+
+                AfterLeakEvent ae = new AfterLeakEvent();
+                ae.commit();
+
+                recording.stop();
+
+                List<RecordedEvent> events = Events.fromRecording(recording);
+                Events.hasEvents(events);
+                RecordedObject sample = findLeak(events, BeforeLeakEvent.class.getName());
+                if (sample != null)  {
+                    long beforeTime = find(events, BeforeLeakEvent.class.getName()).getValue("startTime");
+                    long allocationTime = sample.getValue("allocationTime");
+                    long afterTime = find(events, AfterLeakEvent.class.getName()).getValue("startTime");
+                    System.out.println("Before time     : " + beforeTime);
+                    System.out.println("Allocation time : " + allocationTime);
+                    System.out.println("After time      : " + afterTime);
+
+                    if (allocationTime < beforeTime) {
+                        throw new Exception("Allocation should not happen this early");
+                    }
+                    if (allocationTime > afterTime) {
+                        throw new Exception("Allocation should not happen this late");
+                    }
+                    return; // sample ok
+                }
+            }
+        }
+    }
+
+    private static RecordedObject findLeak(List<RecordedEvent> events, String name) throws Exception {
+        for (RecordedEvent e : events) {
+            if (e.getEventType().getName().equals(EventNames.OldObjectSample)) {
+                RecordedObject object = e.getValue("object");
+                RecordedClass rc = object.getValue("type");
+                if (rc.getName().equals(Leak[].class.getName())) {
+                    return e;
+                }
+            }
+        }
+        return null;
+    }
+
+    private static RecordedEvent find(List<RecordedEvent> events, String name) throws Exception {
+        for (RecordedEvent e : events) {
+            if (e.getEventType().getName().equals(name)) {
+                return e;
+            }
+        }
+        throw new Exception("Could not find event with name " + name);
+    }
+}